Glass cutting apparatus



April l2, 1932. R. P. cALLAiRD ET Al.. 1,853,505

GLASS CUTTING APPARATUS Filed Qct. 20, 1925 2 Sheets-Sheet l April 12, 1932- R. P. CALLARD ET AL. 1,853,505

GLASS` CUTTING APPARATUS Filed oct. 2o, 1925` 2 sheets-sheet 2 provide an apparatus Patented Apr. 12, 1932 UNITED -SA'E'lIY PATENT or-Fics ROBERT P. CALLAR'D AND JOHN JI-I.y MOLLER, Y

SIGNORS TO LIBBEY-OWENS-FORD GLASS COMPANY, F TOLEDO,y OHIO, A CORPORA- TION 0F OHIO OF CHARLESTON, WEST VIRGINIA, ASf

GLASS CUTTING APPARATUS Application led October 20, 192,5. Serial No.V 63,623.

The present invention relates to sheet glass cutting apparatus, and has particular reference to means for cutting a ribbon of glass into sheet lengths.

An important object of the invention is to provide an apparatus wherein a ribbon ofV glass may be transversely scored, the score mark being parallel to the preceding cut.

A further object of the invention is to provide a cutting apparatus wherein a cutter guide and breaker arm are movable as a unit so that the sheet may be scored, after which the breaker arm may be used to separate the sheet from the ribbon from which it is cut.

Another object of the invention is to provide for simultaneous movement of the apparatus with the sheet during the scoring operation. Y

lStill another object of the invention is to for permitting a pre-AV determined length of glass to be cut from a ribbon, the edges of the glass being parallel to reduce Waste. v

Gther objects and advantages ofthe invention will become apparent course of the following description.

In the drawings wherein like numerals larel employed to designate like parts throughout the same,v

Fig. 1 is a side elevation of the Vdevice in 4 use,

Fig. 2 is a top plan view thereof, Fig. 3 is an enlarged view of one of the cutter guide gripping pads,

Fig. 4 is an enlarged plan view ofa portion of the measuring arm, and

Fig. 5 is a sectional elevation on line 5-'5 in Fig. 2.

This invention is particularly well adapt-i f ed for use in connectionV with the Colburn Patent 1,248,809, granted Dec. 4,1917,Where in the ribbon or sheet of glass is annealed in a horizontal leer, and is passed upon the cutting table in a horizontal position.L Of

f course it is not necessarily/limited to this particular construction. Heretofore the ribbon has been'divided` into sheet lengths by a man positioned at the end of the leer and along the side of the cutting table. The type of cut has been dependent' upon the skill of during the Y plane.

or pinned upon the kparticular operat`or. It is diiicult vfor even a skilled operator to score the sheet eX- act'ly parallel 'to the preceding cut due to the fact that the sheet is moving in a direction perpendicular to the score beingvmade. If the score is not parallel to the preceding cu't or at right angles to the edges of the sheet, considerable -waste is had when squaring the sheet up for commercial purposes.

It isV an` aim ofthe present invention to overcome this 'waste which has heretofore beenhad by reason of the fact that a cutter guideis used which is movable with the sheet so that the cutter can run his cutting tool or scoring tool along the cutter guide in a manner that each score will be parallel to the preceding cut. The numeral 6 in Fig. 1 designates the end of the leer in which the sheet 7 is annealed.` The sheet, after it passes from. the end yof the leer 6, is supported upon a movable cutting table 8 which usually comprises a plurality o of wooden blocks 9 connected together as by the vpivot joints 10; The blocks 9 are connected together in an endless belt formation and are driven by means of the rotatable drums' 11 arranged within the loop formed by the'said tabl-e. Rails12 are provided and are adapted to support the upper horizontal runV of the cutting table 8 in a horizontal Supports 13 are used to support ythe rails 12 and to alsohold tracks 14. The tracks 14 are arranged below the upper hori- Zontal run of the rails 12. `A truck 15 is supported by means .of the rollers 16 and-17 -upon the tracks 14. Unitedly attached tothe rollers 17 'on one side of the truck are the pinions 18.v A roller and pinion unit is keyed each end of the shaft 19 mounted in bearings 20, on the side of the truck 15.: `The tracks 14-are of such width toy Y accommodatetherolle'rs161and17 only. 'Attached tothe innersideA of the tracks are racks 21 and p22 adapted to receivev the pinions 18. l The. rack 21 is slidably mounted in 'slots 23 in the track 14 by the bolts 24, and is locked thereto .by the winged nuts 25. In order to makeY and maintain the ends of the apparatus parallel and in alignment, the rack 21 is ladjustableback and forth longi-` tudinally by the jack screws 26 provided at the ends of the track 14. Positioned above the racks 21 and 22 and extending substan-V tially the entire length thereof, are guards 49 which vserve as a means to protect the racks from particles of glass or dirt falling therein. The particular construction and arrangement of the racks 21 and 22 and of the guards therefor .is more clearly described and` claimed in our cospending application Serial No. 80,878 filed Jan. 13, 1926. Pivoted to a portion of the truck y areV aplurality of breaker arms 27 carrying rollers 28 at their ends and a lever 29 at the opposite end thereof. Y The breaker arms 27 and lever 29 are all keyed to the shaft 30,y and by rocking the lever 29 the rollers 28 are brought up and engage the sheet 7 and raise the same from the blocks which is suflicient to cause the scored sheet to separate. The breaking device just described is set forth in a patent to Moller 1,499,393, and is particularly well adapted for use in combination with the pres ent invention. h Y Y The cutter guide .mechanism comprises upright guides 3ll carried inthe brackets 32 attached to the truck l5. The cross heads 33 are slidable on fthe guides 31, being moved by thebell-crank 34, and link 35 pivotally connected to the arm 36 carried by th-e said crossheads 33. Bearings 37 are provided to permit the cross-heads to be moved up and down on the. guides 3l very readily so that by rocking the bell-crank lever 34,V the cross-heads may be moved up or down with respect to the sheet 7. rihe simultaneous movement of the cross-heads-and links at eachside of the apparatus is providedv for by the 'rock :shaft 38 to which the bell-crank'34 is keyed.V A Y cutter guide plate 39, extending transversely across the sheet, is connected tothe two crossheads 33, by being bolted tothe crossehead arms 50. Suitable friction pads 40are attached to the plate and extend below the bottom surface thereof. When the plate is in a lowered position, the padsvvill rest, with` thev weight of the entire cutter guide mechanism, on thev surface of the moving sheetY 7. The friction existing between the glass and pads will usually be sufficient to cause the sheet. to move the entire apparatus inunison with it. `When the plate 39 is in lowered position a cutting or scoring member 41 may be run transversely across the sheet, beingheld in'V engagement with 'the said plate duringlthe scoring v'movement so that a straightfscorewill be had.` Each score will besubstantially parallel to the previous one, as vprovided for by Athe rack and feature mentioned'above. Y A To determine the length of the sheet being cut from. the ribbon 7, a gage arm 42 is pivpinion paralleling f otally associa-ted `with the guide plate 39.

rhe gage is graduated as at 43 and carries `with the endfl ofthe ribbon 7.

at its end an adjustable block 44 havino the shoulder 45 formed thereon which is adapted to abut the free end of the sheet to be cut. lVhen it is desired the gage arm 42 can be swung to the position shown by the dotted lines yin Fig. l, and locked in this position by means of the ball and spring latch 46 when not in use. The gage arm is provided with a recess 47 adapted to receive the locking ballV 43, as shown in F ig. 4.

ln use, the gage arm l42is adjusted for whatever length of sheet is desired, and the block is placed in operable engagement During the adjustment of the gage arm the guide plate is locked in elevated position by the bell-crank 34 andlink 35, carrying the friction pads 40 out of engagement with the sheet. After the desired adjustment is made,'the guide plate is Vlowered and the pads are then in frictional contact With they moving sheet, the moving sheet serving as a means for transmitting longitudinal,movement to the device. The scoring implement 41 may be run transversely across the sheet to score it, preferably after the device is moving with the sheet. The breaker arms are then brought into engagement with the sheet While the device is still in motion to raise it off the cutting table suflicient to cause a separation. The opera-I tion is then repeated.

lt is to be understood that the form of the invention herewith shown and described is to 'be taken as the preferred embodiment of the saine, and that various changes in the shape, size and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims.

Claims: Y

1. In'sheet glass cutting apparatus, a moving table for supporting a movable sheet of glass to be cut, a cutter guide extending trans versely across the sheet, cross-heads attached thereto, guide members on Which the crossheads are vertically slidable, links attached to the cross-heads, means for supporting the guide members and links, and a bell-crank pivotally connected to said links for raising and lowering the cutter guide relative to the sheet. y y

2. In sheet glass cutting apparatus, a moving table for supporting a movable sheet of glass to be cut, a cutter guide extending transversely across thesheet, erossfheads attached thereto, guide memberson which the cross.-

Vheads are verticallyV slidable, pairs Iof links.

attached to the cross-heads, Vmeans for supporting the guide members and l1nks,fa cross shaft connecting the equally raising andlowering the cutter guide throughout its ent1rety, y

n pairs of links, and af lever associated with the links and shaft, forV kable by the 4L. In sheet glass cutting apparatus, a movable table :tor supporting a movable sheet ot glass to be cut, a cutter guide extending transversely across the sheet, cross-heads `attached thereto, guide members on which the crosslieads slide, links attached to the cross-heads, means Jfor supporting the guide members and links, and means connected thereto for raising and lowering the cutter guide, said cutter guide when in lowered position adapted to rictionally engage the sheet to be moved thereby.

5. In sheet glass cutting apparatus, a movable table for supporting a moving sheet of beneath a portion of glass, a track disposed the table, a combined cutter guide and breaker movable along the track, means attached to the guide and engaging the sheet causing the guide to be moved by said sheet, a measuring means attached to the guide and engageable by the tree end of the sheet, and means for locking said means out of operating engagement with the sheet.

6. The combination with a moving table for supporting a moving sheet 'of glass, of a track disposed beneath a portion of the table, a vertically movable cutter guide movable along the track, means attached to the guide and frictionally engaging the sheet causing the guide to be moved thereby, and a measuring means pivoted to the guide and engageiee end of said sheet. y

7. The combination with a moving table 'for supporting a moving sheet of glass, oi a track disposed beneath a portion of the table, a vertically movable cutter guide movable along the track, means attached to the guide the gripping pads out of or into engagement Vwith said moving sheet.

and rictionally engaging the sheet causing the guide to be moved by and with the same, a measuring means pivoted to the guide and engageable by the free end of the sheet, and means for locking said measuring means in a raised position out ot engagement with said sheet.

8. rlhe combination with a moving table for supporting a moving sheet of glass, of a movable truck, a cutter guide positioned across the sheet and mounted on said truck, gripping pads attached to said guideiand engageable with the moving sheet for causing simultaneous movement of said truck and guide therewith, and mean,v for raising and lowering the opposite ends of said cutter guide equal distances simultaneously to move l9. The combination with a moving table `for supporting a moving sheetof glass,.of a movable truck, a vertically movable -'cutter guide positioned across thesheet and mounted on said' truck, gripping pads V,attached yto s'lieetfor causingv simultaneous nioveilne'iit of said truckand guidethere'with, and a measuring mea-ns pivoted to the guide and engageable by the tree'end ot the sheet.

. 10. The combination with'a moving table i,

for supporting a moving sheet of glass, of a movable truck, a cutter" guide positioned acrossthesheet andniounted on said truck, gripping-pads attached to said guide and engageable with the moving sheet for causing simultaneous movement of the truck therewith, a measuring means pivoted to the guide and engageable by the free end of the sheet,

and means for locking said measuring means in a raised position out of engagement with said sheet.

11. The combination with a moving table for supporting a moving sheet of glass, of a movable truck supported beneath the sheet,

a cutter guide extending across the sheet friction pads attached carried by said truck, to the guide and adapted to grip the sheet for causing said guide to be moved therewith, and means for moving the opposite ends of the cut-ter guide equal distances simultaneously relative to the sheet to bring the friction pads into or out of engagement therewith. i

12. In sheet glass apparatus, a Vmovable tab-le for supporting a moving sheet of glass to be cut, la cutter guide movable vertically to and from the sheet, means carried by the guide and engageable with the sheet, means for supporting the cutter guide whereby the same may be moved with. the sheet, vertically movable breaker arms associated with the guide and positioned beneath the sheet, and means for moving the breaker arms and cutter guide vertically independently of one another.

13. The combination with a moving tabley for supporting a moving sheet of glass, of a movable truck, a cutter guide positioned acrossthe sheet and carried by said truck, means attached to said guide and engageable with the moving sheet jfor causing simultaneous movement of said truck and guide therewith, means for raising and lowering the opposite ends of the cutter guide equal distances simultaneously, and breaker arms carried by and movable with the truck and positioned beneath the sheet.

14. VThe combinationxwith a moving table forsupporting a moving sheet of glass, lof a movable truck, a cutter guide positioned across the sheet and carried-by said truck, means attached to said guide and engageable with the moving sheet for causing simultaneous movement of said truck and guide theresaid guide and engageable with theinov'ing "0 n posite ends of the cutter guide equal distances simultaneously, breaker arms carried by and movable With the truck and positioned beneath the sheet, and mea-ns for movngthe 5 breaker arms and Cutter guide vertically into and out of engagement With the sheet independently of one another.

Signed at Charleston; in the county of Kanawha and State of West Virginia, this V10 15th day of October, 1925.

ROBERT P. CALLARD. JOHN I-LMOLLER. 

